Process for producing impressions fast to water on textile fabrics.



, UNITED STATES PATENT OFFICE.

LEON LILIENFELD, OF VIENNA, AUSTRIA-HUNGARY, ASSIGNOR TO GEORGEHAROLD WIN- TERBOTTOM, OF HORTON HOUSE, NEAR NORTHAMPTON, ENGLAND.

PBOCESS'FOR PRODT J'CING IMPRESSIONS EAST TO WATER ON TEXTILE FABRICS.

- Specification of Letters Patent.

Patented. May 26,1908.

Application filed January 8, 1908. Serial No. 409,8 4.

To all whom it may concern:

Be it known that I, LEON LILIENFELD, chemist, a subject of the Em eror of Austria- Hungary, and a resident 0 Vienna, in the 'Empire of Austria-Hungary, VIII. Zeltgasse 1, have invented a Process for Producing Impressions Fast to Water on Textile Fabrics, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

- high boilin The processes heretofore known for producing impressions fast to water on textile fabrics by use of solutions of cellulose nitrates (nitrocelluloses) or celluloid, or cellulose acetates, (acetyl-celluloses) in solvents of comparatively low boiling-point such as amylacetate or formate, have been diflicult'to bring into general use, because the layers of nitrocellulose or/acetyl-cellulose produced on the textiles in the ordinary manner, when of the required thickness, deprive the textile fabrics of their softness to the touch and make them feel more or less stiff, hard or like paper.

Even the addition of various softening agents has not given an entirely satisfactory result because the harshness to the touch has not been sufficiently improved thereby; moreover, the effect of such agents is deleterious to the fastness of the materials to friction or to the brilliancy of the product, or to their fastness to water or to all these qualities together.

According to the present invention the combinations of nitrocellulose or celluloid or cellulose acetates with organic acid esters of -point, more particularly the esters of phfiialic acid, are especially suitable for imparting resistance to water to'impressions on textile fabrics, particularly to the to secure b efiects known as silk finis Textile fab-. rics dressed or coated with such combinations do not lose their softness to the touch when sufiicientquantities of the combinations are applied. These latter have an extremely high capacity of imparting resistance to water to textile materials when these have been rovided with designs applied by means of sil -finishing on goifering rolls.

To the coating compositions there may be also added known dressing or fixing agents such as for example, glue, (gelatin), resins or albuminous substances, according to the nature of the solvents. For example, 100 parts of nitro-cellulose or celluloid are dissolved together with to 150partsof ethyl phthalate, in a suitable solvent, such as methyl alcohol, acetone, ethyl alcohol alone or mixed with acetic anhydrid, ethyl acetate or another ester of low boiling-point such as amylacetate or butyl acetate, the solutionis a lied as a dressing composition to the textl e abric before or a er the goflering process.-

What I claim as my invention and deslre Letters Patent is:

The herein described process for producing LEON LILIENFELD. Witnesses:

WENZEL SINKE, ROBERT S. HEINGARTNER. 

